
- Learn MySQL
- MySQL - Home
- MySQL - Introduction
- MySQL - Installation
- MySQL - Administration
- MySQL - PHP Syntax
- MySQL - Connection
- MySQL - Create Database
- MySQL - Drop Database
- MySQL - Select Database
- MySQL - Data Types
- MySQL - Create Tables
- MySQL - Drop Tables
- MySQL - Insert Query
- MySQL - Select Query
- MySQL - Where Clause
- MySQL - Update Query
- MySQL - Delete Query
- MySQL - Like Clause
- MySQL - Sorting Results
- MySQL - Using Join
- MySQL - NULL Values
- MySQL - Regexps
- MySQL - Transactions
- MySQL - Alter Command
- MySQL - Indexes
- MySQL - Temporary Tables
- MySQL - Clone Tables
- MySQL - Database Info
- MySQL - Using Sequences
- MySQL - Handling Duplicates
- MySQL - SQL Injection
- MySQL - Database Export
- MySQL - Database Import
How to add duplicate varchar values without displaying error in MySQL?
For this, let us see an example and first create a −
mysql> create table DemoTable1409 -> ( -> FirstName varchar(20), -> UNIQUE KEY UN_FirstName(FirstName) -> ); Query OK, 0 rows affected (0.79 sec)
Following is the query to add duplicate varchar −
mysql> alter table DemoTable1409 drop index UN_FirstName; Query OK, 0 rows affected (0.40 sec) Records: 0 Duplicates: 0 Warnings: 0
Insert some records in the table using insert −
mysql> insert into DemoTable1409 values('Chris'); Query OK, 1 row affected (0.18 sec) mysql> insert into DemoTable1409 values('Chris'); Query OK, 1 row affected (0.11 sec) mysql> insert into DemoTable1409 values('David'); Query OK, 1 row affected (0.09 sec)
Display all records from the table using select −
mysql> select * from DemoTable1409;
This will produce the following output −
+-----------+ | FirstName | +-----------+ | Chris | | Chris | | David | +-----------+ 3 rows in set (0.00 sec)
- Related Articles
- Find average on the basis of corresponding duplicate VARCHAR values in MySQL
- How to add column values in MySQL without using aggregate function?
- MySQL query to avoid displaying duplicates values?
- How to add subtotal to a table column displaying NULL in MySQL?
- Add records from corresponding duplicate values in another column with MySQL
- How to select only non - numeric values from varchar column in MySQL?
- Resolve ERROR 1064 (42000) that occurred after using varchar (without providing the size)
- Why does the following error occur in MySQL: ERROR 1062 (23000): Duplicate entry?
- How to order return duplicate column values only once in MySQL?
- Duplicate a MySQL Database without using mysqldump?
- Ignore MySQL INSERT IGNORE statement and display an error if duplicate values are inserted in a table
- How to find a particular varchar id in MySQL from a list of values?
- How to add +1 to existing MySQL values?
- Delete last value and fix two new values (VARCHAR Numbers) in MySQL declared as VARCHAR?
- How to select multiple max values which would be duplicate values as well in MYSQL?

Advertisements